Irish Chain block issue

[Simply Quilting]

I am making an Irish Chain quilt. I have sewn and cut all the strips of fabric. I am now in the process of sewing them into 9 patches. But the blocks refuse to meet together. Here is an example The white on every single block is giving me trouble. Normally if the corners are a little off, I have a little wiggle room to help them match but not with these. How noticeable will this be when the quilt is done? And any suggestions.

Thank you